Is this a B3-2?

[TooJung2Die]

I got started on a thread somewhere about reconditioning the leather seals?

Soak the leather seal in denatured alcohol and clean out all the oil and gunk. Soak it in a 3:1 mixture of pure silicone oil and Neatsfoot oil. Pure
silicone oil is available in varying weights at RC hobby stores. I have some 20wt. Neatsfoot oil has been around for a century or more. It's used to soften and preserve leather. I found a bottle at a shoe repair shop. Both of these oils will diesel in spring piston airguns so wipe off excess before installing back in the gun. A couple of drops in the chamber every 500-1000 shots will preserve the leather. It's widely theorized that a small amount of dieseling contributes to higher velocity in leather sealed airguns. Not enough dieseling to cause a loud detonation but enough to cause a little whiff of smoke. Other experts claim this is hogwash. 

[PaperPunch1]

I had one exactly like that one also in .177....sold it to my sister in law for shooting starlings. It was accurate after a light tune and a scope. There seem to be very few on those which have the rear sight mounted on the dovetail, and the metal trigger guard. Mine had the white spacer behind the piston....many have black.
PaperPunch1

[avator]

I have one exactly the same with the rear sight on the dovetail. Same crappy orange, warning sticker and sling lugs. I got it from a guy at work for $20 and it looks brand new. I hate the color but it looks so original and clean that I hate to change it.

[Evan]

Finally got out to shoot the B3 to get some chrony values.

Using CPHP in .177:
426
432
443
418
446
427
418
401
410
408

Based on the numbers that have been shared, it looks like this one will need to be torn down.

Very rough to cock at times.  Accuracy was probably inside 2" at 15 yards. 

Still looking for scope and mount recommendations.